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Finding the Fourth Proportional to 7,976.78, 11,008.59 and 4,619.65

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Solution

The fourth proportional to 7,976.78, 11,008.59 and 4,619.65 is: 6,375.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,976.78 : 11,008.59 = 4,619.65 : x
  2. Step 2: Convert to fraction form
    7,976.78/11,008.59 = 4,619.65/x
  3. Step 3: Cross multiply
    7,976.78x = 11,008.59 × 4,619.65
  4. Step 4: Simplify right side
    7,976.78x = 50,855,832.79
  5. Step 5: Solve for x
    x = 50,855,832.79/7,976.78
  6. Step 6: Final answer
    x = 6,375.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.